﻿/*
 * RegExpress
 * 
 * Copyright (c) 2010, Daniel McGaughran
 * 
 * Licensed under the Apache Licence, Version 2.0 (the "Licence");
 * you may not use this file except in compliance with the Licence.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 * 
 */

using System;
using System.Collections.Generic;
using System.Windows.Input;


namespace XrControls.Entities
{
	public class KeyCommandSet
	{
		private Dictionary<string, ICommand> _commandMappings;

		public KeyCommandSet()
		{
			_commandMappings = new Dictionary<string, ICommand>();
		}


		public ICommand this[string keyExpression]
		{
			get
			{
				if(_commandMappings.ContainsKey(keyExpression))
					return _commandMappings[keyExpression];

				return null;
			}
			set
			{
				_commandMappings[keyExpression] = value;
			}
		}


		public void RemoveCommand(string keyExpression)
		{
			if(_commandMappings.ContainsKey(keyExpression))
				_commandMappings.Remove(keyExpression);
		}


		public bool IsMapped(string keyExpression)
		{
			return _commandMappings.ContainsKey(keyExpression);
		}


	}
}
